The Fox's Never-Ending Lies summary:

Tang Ran is a sunny and cheerful little fox. In order to graduate from the monster school, she transformed into a human college student and wanted to seduce a human to fall in love with her. However, what she didn't know was that the cold-hearted human female professor she fell in love with, Su Qingci, was actually...? A lie requires countless other lies to cover it up. To make the other person fall in love with them first, the fox will always tell "lies".